Moses anzelewitz



(No Model.) I

M. ANZELEWITZ.

WATCH BALANCE SPRING.

r1\I0.548,169. Patented O0t.22,1895.

@a/fg@ UNITED STATES PATENT OEEicE.

MOSES ANZELEVITZ, OE NEW YORK, N. Y.

WATCH BALANCE-SPRING.

SCIFICATION forming part of Letters Patent No. 548,169, dated October 22, 1895. Application led September 28, 1893. Serial No. 486,753. (No model.)

To @ZZ whom it may concern.-

Be it known that I, MOSES ANZELEWITZ, a citizen of Russia, and a resident of New York, in the county of New York and State of New York, have invented certain 'new and useful Improvements in the Construction of Watches or Clocks, of which the following is a specification.

My invention relates to hairsprings for watches and clocks, and has for its object to provide suoli an arrangement of springs as will insure the timepiece against uneven running, due to changes of temperature, and, moreover, to produce such a combination of forms of springs and arrangement of regulator as will produce a constant mutual action of the springs.

Referring to the drawings, forming a part of this specification, and in which like letters and figures refer to similar parts in the several views, Figure l is a front view of a portion of the base-plate of a timepiece, having a balance-wheel arranged thereon in the usual manner. Fig. 2 is a plan view of Fig. 1, looking from the rear.

Referring now to the drawings, 5 is a portion of the base-plate of a timepiece, to which is secured in the usual manner the escapement-bridge c, provided with a journal, which, in conjunction with a similar journal correctly disposed in the base-plate, receives the balance-staff c@ of the balance-wheel c of the movement.

Adjacent the wheel e is erected a post d, provided with slots b and b, to receive the outer ends of two hairsprings A and B, the inner ends of which are secured to the balance-staff a in the usual manner.

The spring B is of the usual construction, whereas spring A is of the Breguet variety, and is wound in a direction opposite to that of the spring B. I

Pivotally attached to the head of the bridge c is a regulating-lever f, ot' the usual angular form, and provided at its outer end with a downwardly-extending loop g, which encircles one or more convolutioiis of the Breguet spring.

The object in this arrangement of springs and regulator-loop is to overcome the defects arising from the application of the regulator to but one spring of a pair of oppositely-wound springs operating on a common shaft, which defects consist in the variation of position of the center of vibration and the consequent uneven wabbling of the action.

Having now described Vmy invention and the manner in which it is to be constructed and operated, what I claim is- 1. The combination with a balance wheel of a plurality of mutually opposing springs, one of said springs being of the Breguet variety, land a regulating lever in operative relation to said Breguet spring only.

2. The combination with a balance Wheel of a plurality of springs, one of said springs being of the Breguet variety, and a regulating levei' in operative relation with said Breguet spring only.

Signed at New York, in the county of New York and State of New York, this 27th day of September, A. D. 1893.

MOSES ANZELEWITZ. Witnesses:

SAMUEL ANzELEvvrrz,

SAMUEL SCHWARTZ. 

